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/*
* Copyright 2012, The Android Open Source Project
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS ``AS IS'' AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "config.h"
#include "DrawExtra.h"
#include "GLExtras.h"
#include "LayerAndroid.h"
#include "SkCanvas.h"
#include "SkRegion.h"
#include "WebViewCore.h"
RegionLayerDrawExtra::RegionLayerDrawExtra()
: m_highlightColor(COLOR_HOLO_LIGHT)
{}
RegionLayerDrawExtra::~RegionLayerDrawExtra()
{
HighlightRegionMap::iterator end = m_highlightRegions.end();
for (HighlightRegionMap::iterator it = m_highlightRegions.begin(); it != end; ++it) {
delete it->second;
it->second = 0;
}
}
SkRegion* RegionLayerDrawExtra::getHighlightRegionsForLayer(const LayerAndroid* layer)
{
int layerId = layer ? layer->uniqueId() : 0;
return m_highlightRegions.get(layerId);
}
void RegionLayerDrawExtra::addHighlightRegion(const LayerAndroid* layer, const Vector<IntRect>& rects,
const IntPoint& additionalOffset,
const IntRect& clipRect)
{
if (rects.isEmpty())
return;
int layerId = layer ? layer->uniqueId() : 0;
SkRegion* region = m_highlightRegions.get(layerId);
if (!region) {
region = new SkRegion();
m_highlightRegions.set(layerId, region);
}
IntPoint offset = additionalOffset;
WebViewCore::layerToAbsoluteOffset(layer, offset);
for (size_t i = 0; i < rects.size(); i++) {
IntRect r = rects.at(i);
if (!clipRect.isEmpty()) {
r.intersect(clipRect);
if (r.isEmpty())
continue; // don't add it to the region
}
r.move(-offset.x(), -offset.y());
region->op(r.x(), r.y(), r.maxX(), r.maxY(), SkRegion::kUnion_Op);
}
}
void RegionLayerDrawExtra::draw(SkCanvas* canvas, LayerAndroid* layer)
{
SkRegion* region = getHighlightRegionsForLayer(layer);
if (!region || region->isEmpty())
return;
SkRegion::Iterator rgnIter(*region);
SkPaint paint;
paint.setColor(m_highlightColor.rgb());
while (!rgnIter.done()) {
const SkIRect& rect = rgnIter.rect();
canvas->drawIRect(rect, paint);
rgnIter.next();
}
}
void RegionLayerDrawExtra::drawGL(GLExtras* glExtras, const LayerAndroid* layer)
{
SkRegion* region = getHighlightRegionsForLayer(layer);
if (!region || region->isEmpty())
return;
const TransformationMatrix* transform = layer ? layer->drawTransform() : 0;
glExtras->drawRegion(*region, true, false, transform, m_highlightColor);
}
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